Light bulb



FIG. 1 is a perspective view of the light bulb.

FIG. 2 is a front view of the light bulb.

FIG. 3 is a rear view of the light bulb.

FIG. 4 is a left side view of the light bulb.

FIG. 5 is a right side view of the light bulb.

FIG. 6 is a bottom plan view of the light bulb; and,

FIG. 7 is a top plan view of the light bulb. 

The ornamental design for a light bulb, as shown and described. 